I am trying to display a toast message after the user gets to the main intent.
I try to accomplish that by doing this by the code below but with no success:
On the second activity(MapsActivity) I did:
public void userLocationIsNull(){
Intent intent = new Intent(MapsActivity.this, MainActivity.class);
startActivityForResult(intent,1010);
}
And on the first activity(MainActivity) I did:
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == 1010) {
Toast.makeText(this, "System could find your location,please try again", Toast.LENGTH_SHORT).show();
}
}
The intent is working,but the Toast is'nt showing,glad to hear your thoughts,thanks.
Insted of using
Toast.makeText(this, "System could find your location,please try again", Toast.LENGTH_SHORT).show();
try :
Toast.makeText(getApplicationContext(), "System could find your location,please try again", Toast.LENGTH_SHORT).show();
You should check into the use of onActivityResult() here.
Your onActivityResult() will be called in the activity in which you create the intent itself(in this case your MapsActivity) and not in any other Activity (here MainActivity).
Update
Ok so once you have used this method correctly, try this inside your if statement for requestCode
if (resultCode == Activity.RESULT_OK) {
// your toast here
}
else{
// the Activity result is null, and so your 'if' statement is not working
}
Tell me if this helps or not
Related
I have four activities:
Activity A
private void addCard() {
Intent intent = new Intent(MainActivity.this, GetNumberActivity.class);
startActivityForResult(intent, REQUEST_CODE_CREATE);
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == REQUEST_CODE_CREATE) {
if (resultCode == RESULT_OK) {
if (data.hasExtra("data")) {
// Card has been create
Toast.makeText(getApplication(), "Karata została wygenerowana.", Toast.LENGTH_SHORT).show();
}
}
}
}
Activity B
Intent intent = new Intent(GetNumberActivity.this, ScanQrCodeActivity.class);
intent.putExtra(EXTRA_MESSAGE, uunitValue);
startActivityForResult(intent, REQUEST_CODE);
Then in the second activity I have to pass data to the third activity.
Activity C
Card card = new Card(path3, base32, nameCard, intervalTotp, passwordHotp, getDate(), expirationDate, hotpValue);
Intent intent = new Intent(ScanQrCodeActivity.this, Stage3Activity.class);
intent.putExtra("card", card);
startActivity(intent);
finish();
Activity D
Intent data = new Intent(Stage3Activity.this,MainActivity.class);
data.putExtra("data", card);
startActivityForResult(data, RESULT_OK);
When I press the button on Activity A, the Toast is not shown.
You need to update your code as follow
if (resultCode == RESULT_OK) {
if (requestCode == REQUEST_CODE_CREATE) {
if (data.hasExtra("data")) {
// Card has been create
Toast.makeText(getApplication(), "Karata została wygenerowana.", Toast.LENGTH_SHORT).show();
}
}
}
First check for RESULT_OK and then proceed further
Happy Coding!
Replace getApplication() with this (the context of the current activity)
Toast.makeText(this.class, "Karata została wygenerowana.", Toast.LENGTH_SHORT).show();
Use getApplicationContext() instead of getApplication() in your makeText() method
I am making a music player application, and I am trying to implement playlists. I have a file chooser in another intent, and I would like the ListView in the mainActivity to update when the file chooser intent closes. how can I call my UpdateListView method when it closes?
start intent:
Intent intent = new Intent(this, FileChooser.class);
startActivity(intent);
Closing intent
public void closeButton(View view){
finish();
}
Any help would be appreciated! thanks!
I assume you are using your own FileChoser class, not a standard Android one:
private static final int FileChooserRequestCode = 666;
Intent intent = new Intent(this, FileChooser.class);
startActivityForResult(intent, FileChooserRequestCode);
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == FillChooserRequestCode) {
if (resultCode == Activity.RESULT_OK) {
// ... file is chosen
String fileName = data.getStringExtra("FileName");
} else {
... dialog is closed
}
}
}
in FileChoser you do
Intent intent = new Intent();
intent.putStringExtra("FileName", fileName);
SetResult(Activity.RESULT_OK, intent);
finish();
and
SetResult(Activity.RESULT_CANCELED);
finish();
You can use startActivityForResult() please refer the link Getting Results From Activity
static final int FILE_CHOOSER_INTENT = 1; // The request code
...
private void chooseFile() {
Intent intent = new Intent(this, FileChooser.class);
startActivityForResult(intent, FILE_CHOOSER_INTENT);
}
Call setResult pass your result data as Intent. for details refer link SetResult function
Override this in your calling activity
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// Check which request we're responding to
if (requestCode == FILE_CHOOSER_INTENT) {
// Make sure the request was successful
if (resultCode == RESULT_OK) {
// The user picked a contact.
// The Intent's data Uri identifies which contact was selected.
// Do something with the contact here (bigger example below)
}
}
}
I've got a problem I don't know how to solve.
This is my code of the MainActivity.java which starts a new activity:
Intent intent = new Intent(this, AssociationActivity.class);
intent.putExtra("data", json);
startActivityForResult(intent, 0);
Additionaly, I have the following onActivityResult()-method:
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
System.out.print("works outside!");
if (requestCode == 1) {
if(resultCode == RESULT_OK){
System.out.print("works inside!");
}
if (resultCode == RESULT_CANCELED) {
}
}
}
And this is where the result should be sent to the MainActivity:
Intent returnIntent = new Intent();
returnIntent.putExtra("result", string);
setResult(RESULT_OK, returnIntent);
finish();
It seems that the onActivityResult() doesn't even get called as I don't have any output on the console.
In the AndroidManifest.xml I neither use the singleIntent nor the noHistory parameter.
Any suggestions why it doesn't work?
requestCode change from 1 to 0. as shown below
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
System.out.print("works outside!");
if (requestCode == 0) {
if(resultCode == RESULT_OK){
System.out.print("works inside!");
}
if (resultCode == RESULT_CANCELED) {
}
}
}
Okay, I found the issue, the wasn't any issue at all, I replaced the System.out statements with the Log from Android it's working all the time, Android just delayed the System.out, but I don't know why.
Thanks #Rene Juuse for that tip!
In my MainActivity, I launch a second activity:
Button button = (Button) findViewById(R.id.btnPush);
button.setOnClickListener(new View.OnClickListener(){
public void onClick(View view){
Intent nowStart = new Intent(getApplicationContext(), AddPillScheduleActivity.class);
startActivityForResult(nowStart, RESULT_OK);
//startSecond();
}
});
Then inside my Second Activity, I would like to return a value back to the main activity.
Intent i=new Intent();
i.putExtra("ANSWER", ans);
setResult(RESULT_OK,i);
finish();
That seems to execute fine, but back in my MainActivity, I would like to grab the value. This is where I am having trouble. My debugger never stops on my onActivityResult, which is:
#Override
protected void onActivityResult(int requestCode ,int resultCode ,Intent data ) {
super.onActivityResult(requestCode, resultCode, data);
String name = getIntent().getExtras().getString("ANSWER");
if (resultCode == RESULT_OK) {
Toast.makeText(this, name, Toast.LENGTH_LONG).show();
}
Can someone shed a little light? Thanks.
You're not getting the value from the right intent, the one that comes with the method. Modify your code to the following:
#Override
protected void onActivityResult(int requestCode ,int resultCode ,Intent data ) {
super.onActivityResult(requestCode, resultCode, data);
String name = data.getStringExtra("ANSWER");
if (resultCode == RESULT_OK) {
Toast.makeText(this, name, Toast.LENGTH_LONG).show();
}
}
Use the getStringExtra method as you put a String in your intent and not a bundle. Also, not the best practice use the same code for the requestCode and resultCode.
String name = getIntent().getExtras().getString("ANSWER");
is accessing the wrong intent. getIntent() returns the intent that started the activity. You want
String name = data.getExtras().getString("ANSWER");
Also, the second parameter of startActivityForResult() is a request code, so using RESULT_OK -- althought it still works -- is confusing.
Ok so this here is the intent I am sending
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
fileUri = getOutputMediaFileUri(MEDIA_TYPE_IMAGE); // create a file to save the image
intent.putExtra(MediaStore.EXTRA_OUTPUT, fileUri); // set the image file name
startActivityForResult(intent, REQUEST_CODE);
And then in the onActivityResult I am doing this:
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
Log.i("Intent name:",data.toString());
if (requestCode == REQUEST_CODE){
if (resultCode == Activity.RESULT_OK){
Toast.makeText(this, "Image saved to \n" + fileUri.toString() , Toast.LENGTH_LONG).show();
Toast.makeText(this, "Result Code: " + resultCode , Toast.LENGTH_LONG).show();
//Bitmap mBitMap = BitmapFactory.decodeFile(data.getData().toString());
//imageView.setImageBitmap(mBitMap);
}
else if (resultCode == RESULT_CANCELED){
Toast.makeText(this, "Capture Cancelled", Toast.LENGTH_LONG).show();
}
else {
Toast.makeText(this, "Capture failed", Toast.LENGTH_LONG).show();
}
}
super.onActivityResult(requestCode, resultCode, data);
}
The LogCat is showing a NullPointerException at the line that says Image Saved....
And also this:
java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=100, result=-1, data=null}
This happens whether i try to use the data object or the fileUri field of my class.
Why is data being returned null?
Why is it that even though I am using a field of the class i still get the same error?
Whenever you save an image by passing EXTRAOUTPUT with camera intent ie
intent.putExtra(MediaStore.EXTRA_OUTPUT, fileUri);
in a file, the data parameter inside the onActivityResult always return null. So, instead of using data to retrieve the image , use the filepath to retrieve the Bitmap.
So onActivityResult would be something like this:
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == REQUEST_CODE) {
if (resultCode == Activity.RESULT_OK) {
String[] fileColumn = { MediaStore.Images.Media.DATA };
Cursor cursor = getContentResolver().query(imageUri,
fileColumn, null, null, null);
String contentPath = null;
if (cursor.moveToFirst()) {
contentPath = cursor.getString(cursor
.getColumnIndex(fileColumn[0]));
Bitmap bmp = BitmapFactory.decodeFile(contentPath);
ImageView img = (ImageView) findViewById(R.id.imageView1);
img.setImageBitmap(bmp);
} else if (resultCode == RESULT_CANCELED) {
Toast.makeText(this, "Capture Cancelled", Toast.LENGTH_LONG)
.show();
} else {
Toast.makeText(this, "Capture failed", Toast.LENGTH_LONG)
.show();
}
}
super.onActivityResult(requestCode, resultCode, data);
}
Make sure that you have taken imageUri or fileUri as a global variable so that you can access it inside onActivityResult as well. Best of luck
The correct/preferred way to handle data in these cases would be as:
In called Activity set data to the Intent , then setResult code as RESULT_OK and then finish that activity.
In this recieving activity , check the result code.. and retrieve data from Intent variable as :intent.getExtra("... "); //The variables which you have set in the child activity that has been closed now..